Finding the Fourth Proportional to 1,691,311.42, 2,531,990.49 and 1,128,951.10
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Solution
The fourth proportional to 1,691,311.42, 2,531,990.49 and 1,128,951.10 is: 1,690,104.74
Step by Step Solution
- Step 1: Write the proportion equation
1,691,311.42 : 2,531,990.49 = 1,128,951.10 : x - Step 2: Convert to fraction form
1,691,311.42/2,531,990.49 = 1,128,951.10/x - Step 3: Cross multiply
1,691,311.42x = 2,531,990.49 × 1,128,951.10 - Step 4: Simplify right side
1,691,311.42x = 2,858,493,448,875.04 - Step 5: Solve for x
x = 2,858,493,448,875.04/1,691,311.42 - Step 6: Final answer
x = 1,690,104.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.